The ability to freeze and thaw embryos successfully is one of the greatest advancements in assisted reproductive technology. A US woman has successfully delivered a baby with a 25-year-old frozen embryo - the longest known frozen human embryo. Frozen as embryo on October 14, 1992, Emma Wren was born to Tina Gibson on November 25, 2017, weighing 6 pounds 8 ounces and measuring 20 inches long.
‘A baby has been born from an embryo frozen for nearly 25 years - possibly the longest gap between conception and birth since IVF began.’"Do you realise I'm only 25? This embryo and I could have been best friends," Gibson, a resident of East Tennessee said. "I just wanted a baby. I don't care if it's a world record or not."
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Previously, the oldest known frozen embryo that came to successful birth was 20 years old. When Gibson got married seven years ago, her husband had cystic fibrosis, a condition that can make men infertile.
The couple decided to adopt a child. In the meantime, they would foster several children. Then, last year, her father told them about embryo adoption, where an embryo will be implanted in the body helping them to carry a baby.
In August 2016, Gibson submitted an application for the adoption, and by spring had three embryos from the same anonymous donor transferred into her uterus.
After a series of medical examinations to see whether her uterus would be physically capable of receiving an implanted embryo, she was declared eligible for implantation in January.